1 /* $NetBSD: v831.c,v 1.10 2004/04/23 22:11:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: v831.c,v 1.10 2004/04/23 22:11:44 christos Exp $"); 38 #endif /* not lint */ 39 40 /* 41 * Routines for dialing up on Vadic 831 42 */ 43 #include "tip.h" 44 45 static jmp_buf jmpbuf; 46 static int child = -1; 47 48 static void alarmtr __P((int)); 49 static int dialit __P((char *, char *)); 50 static char *sanitize __P((char *)); 51 52 int 53 v831_dialer(num, acu) 54 char *num, *acu; 55 { 56 int status, mypid; 57 int timelim; 58 59 if (boolean(value(VERBOSE))) 60 printf("\nstarting call..."); 61 #ifdef DEBUG 62 printf ("(acu=%s)\n", acu); 63 #endif 64 if ((AC = open(acu, O_RDWR)) < 0) { 65 if (errno == EBUSY) 66 printf("line busy..."); 67 else 68 printf("acu open error..."); 69 return (0); 70 } 71 if (setjmp(jmpbuf)) { 72 kill(child, SIGKILL); 73 close(AC); 74 return (0); 75 } 76 signal(SIGALRM, alarmtr); 77 timelim = 5 * strlen(num); 78 alarm(timelim < 30 ? 30 : timelim); 79 if ((child = fork()) == 0) { 80 /* 81 * ignore this stuff for aborts 82 */ 83 signal(SIGALRM, SIG_IGN); 84 signal(SIGINT, SIG_IGN); 85 signal(SIGQUIT, SIG_IGN); 86 sleep(2); 87 exit(dialit(num, acu) != 'A'); 88 } 89 /* 90 * open line - will return on carrier 91 */ 92 if ((FD = open(DV, O_RDWR)) < 0) { 93 #ifdef DEBUG 94 printf("(after open, errno=%d)\n", errno); 95 #endif 96 if (errno == EIO) 97 printf("lost carrier..."); 98 else 99 printf("dialup line open failed..."); 100 alarm(0); 101 kill(child, SIGKILL); 102 close(AC); 103 return (0); 104 } 105 alarm(0); 106 signal(SIGALRM, SIG_DFL); 107 while ((mypid = wait(&status)) != child && mypid != -1) 108 ; 109 if (status) { 110 close(AC); 111 return (0); 112 } 113 return (1); 114 } 115 116 static void 117 alarmtr(dummy) 118 int dummy; 119 { 120 121 alarm(0); 122 longjmp(jmpbuf, 1); 123 } 124 125 /* 126 * Insurance, for some reason we don't seem to be 127 * hanging up... 128 */ 129 void 130 v831_disconnect() 131 { 132 struct termios cntrl; 133 134 sleep(2); 135 #ifdef DEBUG 136 printf("[disconnect: FD=%d]\n", FD); 137 #endif 138 if (FD > 0) { 139 ioctl(FD, TIOCCDTR, 0); 140 tcgetattr(FD, &cntrl); 141 cfsetospeed(&cntrl, 0); 142 cfsetispeed(&cntrl, 0); 143 tcsetattr(FD, TCSAFLUSH, &cntrl); 144 ioctl(FD, TIOCNXCL, NULL); 145 } 146 close(FD); 147 } 148 149 void 150 v831_abort() 151 { 152 153 #ifdef DEBUG 154 printf("[abort: AC=%d]\n", AC); 155 #endif 156 sleep(2); 157 if (child > 0) 158 kill(child, SIGKILL); 159 if (AC > 0) 160 ioctl(FD, TIOCNXCL, NULL); 161 close(AC); 162 if (FD > 0) 163 ioctl(FD, TIOCCDTR, 0); 164 close(FD); 165 } 166 167 /* 168 * Sigh, this probably must be changed at each site. 169 */ 170 struct vaconfig { 171 const char *vc_name; 172 char vc_rack; 173 char vc_modem; 174 } vaconfig[] = { 175 { "/dev/cua0",'4','0' }, 176 { "/dev/cua1",'4','1' }, 177 { 0 } 178 }; 179 180 #define pc(x) (c = x, write(AC,&c,1)) 181 #define ABORT 01 182 #define SI 017 183 #define STX 02 184 #define ETX 03 185 186 static int 187 dialit(phonenum, acu) 188 char *phonenum; 189 char *acu; 190 { 191 struct vaconfig *vp; 192 struct termios cntrl; 193 char c; 194 int i; 195 196 phonenum = sanitize(phonenum); 197 #ifdef DEBUG 198 printf ("(dial phonenum=%s)\n", phonenum); 199 #endif 200 if (*phonenum == '<' && phonenum[1] == 0) 201 return ('Z'); 202 for (vp = vaconfig; vp->vc_name; vp++) 203 if (strcmp(vp->vc_name, acu) == 0) 204 break; 205 if (vp->vc_name == 0) { 206 printf("Unable to locate dialer (%s)\n", acu); 207 return ('K'); 208 } 209 tcgetattr(AC, &cntrl); 210 cfsetospeed(&cntrl, B2400); 211 cfsetispeed(&cntrl, B2400); 212 cntrl.c_cflag |= PARODD | PARENB; 213 cntrl.c_lflag &= ~(ISIG | ICANON); 214 tcsetattr(AC, TCSANOW, &cntrl); 215 tcflush(AC, TCIOFLUSH); 216 pc(STX); 217 pc(vp->vc_rack); 218 pc(vp->vc_modem); 219 while (*phonenum && *phonenum != '<') 220 pc(*phonenum++); 221 pc(SI); 222 pc(ETX); 223 sleep(1); 224 i = read(AC, &c, 1); 225 #ifdef DEBUG 226 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 227 #endif 228 if (i != 1) 229 c = 'M'; 230 if (c == 'B' || c == 'G') { 231 char cc, oc = c; 232 233 pc(ABORT); 234 read(AC, &cc, 1); 235 #ifdef DEBUG 236 printf("abort response=%c\n", cc); 237 #endif 238 c = oc; 239 v831_disconnect(); 240 } 241 close(AC); 242 #ifdef DEBUG 243 printf("dialit: returns %c\n", c); 244 #endif 245 return (c); 246 } 247 248 static char * 249 sanitize(s) 250 char *s; 251 { 252 static char buf[128]; 253 char *cp; 254 255 for (cp = buf; *s && buf + sizeof buf - cp > 1; s++) { 256 if (!isdigit((unsigned char)*s) && *s == '<' && *s != '_') 257 continue; 258 if (*s == '_') 259 *s = '='; 260 *cp++ = *s; 261 } 262 *cp++ = 0; 263 return (buf); 264 } 265